Sharpening block for racing skates



V.MUIIE vwanto'a April 24, 1928.

` R. D. coRKE SHARPENING BLOCK FOR.RACING SKATES Filed DeG. 2. 1926 Patented Apr. 24, 1928.

* "arca-Amir. coaxEjoriYoNxERs; NEW Yoan,

Application ined December 2f/1926.. yserial.naiss-,236. y f

ing them to any clamping` action;`to provide such a device which shall insure the exact positioning of the skates, thus obviating the possibility of setting the skates at incorrect angles, while being sharpened; to provide a sturdy strong construction and yet one in which the weight isnot eXces-l,

sive; and generally to provide improvements in sharpening blocks ofthis character with a view to simplifying and cheapening the construction and rendering the vsame more efficient and reliable in service.

l/Vith the above and other objects in View the invention further consists in' the arrangements of parts and details ofconstruction more specifically pointed out in the following description of the accompanying drawings forming a part of thisv specification. o i

Inthe drawings:

Figure 1 is aperspective view ofr a device illustrating the invention showing a skate clamped in position to be sharpened.

Figure 2 is an end view ofthis device showing two skates clamped in position.

By reference to the drawings it will beV noted that the device illustratedembodies a circular bar or rod, 10, composed of brass or similar metal and extending .in horizontal, longitudinal direction. On this bar the clamping members are adapted. to vbe slidably and adjustably positioned, the bar serving to maintain them in accurate alinement. Each clamping member comprises a frame portion 11, and a hub portionf12, these portions vbeing integrally formed and connected together as by means of a yoke composed of radiating arms 13. The top portion of the hub 12 is split at 14 and the two portions of the hub thus defined merge into curved substantially semi-circular jaw members 15 which cooperateV with similar jaw members 16 formed integrally as part of the frame 11. By means of this construction substantially Vcircular recesses 17 are provided in which" arek adapted to be positioned thetubes` 18 ofjtheskates. Thus it :will be seen that the clamping laction ofglftheljaws'is exerted only uponthe bladesY 19 ofthe skates ,and the tubes and the other portions of the skates are not aifected thereby. y

' .In-f combination with this construction are provided` means for forcing the jaws together so that they may hold the skates'securely in position, and, to this end, bolts 20, extendin ing members are employed. These bolts are provided with winged nuts, 21, which when y tightened, serve to force the jaws together and when loosened allow them to spread apart ybecause of the resiliency thereof.

`The heel clamping membersare preferabl provided with extensions, 22, as shown in igure 1. This results in a construction by which racing skates of all vsorts may be securely clamped, regardless'of shortness of heel.- i

From the above vit will be apparent that 'the skates are positioned in the clamping 0f transversely through the clampf members by loosening the Winged nuts 2l which allow the jaws to spread apart after which the` skates are disposed therein with the tubes positioned in the'circular recesses in the manner shown in the drawings. Thus, when the winged nuts are tightened, the jaws clamp the skates securely in position but only act upon the blades of the skates and do not clamp theother parts thereof. Then the wing nuts aretightened, the hub jaws are pulled toward one another so that the hubs are placed under tension on the bar 10 and the clamping members locked in position. "It will be seen also thatby means of this construction the skates are secured in substantially horizontal positions and there is no danger of their being set at incorrect angles. This provides a construction, therefore, in which the skates are sharpened absolutely correctly.

This device may be vused with all makes and sizes of racing skates, it being only necessary to slide the clamping members on the bar 10 in order to adjust the distance between them.

Although` I do not confine myself to any construction it is withal very light and does not exceed in weight to any great extent the wooden constructions now used. Y

Although I have described in some detail the preferred construction, I do not desire to confine myself to the eX-act details thereof except as necessitated by the state of the prior art and the scope of the appended claim.

I claim:

A device of the class described comprising a longitudinally extending bar and a plu rality of clamping members slidably mounted thereon, each of said clamping members comprising` a hub portion around the bar, a frame portion, means connecting the frame and hub, resilient clamping jaws carried by the lframe and hub, and means for pulling the jaws ot the frame and Vhub toward each other whereby `the hub is put under tension on the bar.

In testimony whereof, I have signed my name to this specification this eighth -day of November, 1926. i

RICHARD D. comme.' 

